add: hasOwnProperty

src/util/utils.ts

@@ -204,3 +204,13 @@ export function validateSlashCommands(
     }
   }
 }
+
+// Typescript is not so good as we developers so we need this little utility function to help it out
+// Taken from https://fettblog.eu/typescript-hasownproperty/
+/** TS save way to check if a property exists in an object */
+export function hasOwnProperty<T extends {}, Y extends PropertyKey>(
+  obj: T,
+  prop: Y,
+): obj is T & Record<Y, unknown> {
+  return obj.hasOwnProperty(prop);
+}